Improvements in MPI scoresBoth the intervention group and placebo group reported significant improvements in their cognitive function, as measured by the memory performance index (MPI), by the end of the trial. However, when comparing the extent of improvements, the intervention group had a significantly greater improvement than the placebo group. As for the placebo group, the mean MPI score went up from 49.3 to 54.7 by the end of the trial. Specific improvementsAnalysis of the MCIS test components showed that the intervention group showed significantly better results than the placebo group at immediate recall and delayed free recall tests. Effects more pronounced in seniors with MCISubgroup analysis showed that GLR’s benefits for cognitive function were more significant in participants diagnosed with MCI as compared to those without MCI.